<script setup lang="ts">
import { ref } from 'vue'
import { getHotCommen } from '@/apis/hot'
import { onLoad } from '@dcloudio/uni-app';
import type { SubTypeItem } from '@/types/hot'
// 热门推荐页 标题和url
const hotMap = [
  { type: '1', title: '特惠推荐', url: '/hot/preference' },
  { type: '2', title: '爆款推荐', url: '/hot/inVogue' },
  { type: '3', title: '一站买全', url: '/hot/oneStop' },
  { type: '4', title: '新鲜好物', url: '/hot/new' }
]
//获取热门推荐传递过来的类型
const props = defineProps<{
  type: string
}>()
const hot = hotMap.find(ele => ele.type === props.type)
//设置标题
uni.setNavigationBarTitle({
  title: hot!.title
})
//保存推荐封面图 
const bannerPicture = ref('')
//保存高亮效果
const activeIndex = ref(0)
//保存子类合集数据
const subType = ref<(SubTypeItem & { loading?: boolean })[]>([])
//获取热门推荐
const getHotItem = async () => {
  const res = await getHotCommen(hot!.url)
  console.log(res.result);
  bannerPicture.value = res.result.bannerPicture
  subType.value = res.result.subTypes
}

onLoad(() => {
  getHotItem()
})
//滚动到底部触发
const onScrolltolower = async () => {
  //获取当前页码
  const currentSubType = subType.value[activeIndex.value]
  if (currentSubType.goodsItems.page < currentSubType.goodsItems.pages) {
    currentSubType.goodsItems.page++
  } else {
    currentSubType.loading = true
    return uni.showToast({
      title: '没有更多数据了...',
      icon: 'none'
    })
  }
  //获取新数据 
  const res = await getHotCommen(hot!.url, {
    subType: currentSubType.id,
    pageSize: 10,
    page: currentSubType.goodsItems.page
  })
  const newSubTypes = res.result.subTypes[activeIndex.value]
  //当前页码追加新数据
  currentSubType.goodsItems.items.push(...newSubTypes.goodsItems.items)
}

</script>

<template>
  <view class="viewport">
    <!-- 推荐封面图 -->
    <view class="cover">
      <image :src="bannerPicture" class="image" mode="widthFix"></image>
    </view>
    <!-- 推荐选项 -->
    <view class="tabs">
      <text class="text" :class="{ active: index === activeIndex }" v-for="(item, index) in subType" :key="item.id"
        @tap="activeIndex = index">{{ item.title }}</text>
    </view>
    <!-- 推荐列表 -->
    <scroll-view scroll-y class="scroll-view" v-for="(item, index) in subType" :key="item.id"
      v-show="index === activeIndex" @scrolltolower="onScrolltolower">
      <view class="goods">
        <navigator hover-class="none" class="navigator" v-for="goods in item.goodsItems.items" :key="goods.id"
          :url="`/pages/goods/goods?id=${goods.id}`">
          <image class="thumb" :src="goods.picture"></image>
          <view class="name ellipsis">{{ goods.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ goods.price }}</text>
          </view>
        </navigator>
      </view>
      <view class="loading-text">{{ item.loading ? '没有更多数据了...' : '正在加载...' }}</view>
    </scroll-view>
  </view>
</template>

<style lang="scss">
page {
  height: 100%;
  background-color: #f4f4f4;
}

.viewport {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 180rpx 0 0;
  position: relative;
}

.cover {
  width: 750rpx;
  height: 225rpx;
  border-radius: 0 0 40rpx 40rpx;
  overflow: hidden;
  position: absolute;
  left: 0;
  top: 0;
}

.cover .image {
  width: 750rpx;
}

.scroll-view {
  flex: 1;
  overflow: hidden;
}

.tabs {
  display: flex;
  justify-content: space-evenly;
  height: 100rpx;
  line-height: 90rpx;
  margin: 0 20rpx;
  font-size: 28rpx;
  border-radius: 10rpx;
  box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
  color: #333;
  background-color: #fff;
  position: relative;
  z-index: 9;
}

.tabs .text {
  margin: 0 20rpx;
  position: relative;
}

.tabs .active::after {
  content: '';
  width: 40rpx;
  height: 4rpx;
  transform: translate(-50%);
  background-color: #27ba9b;
  position: absolute;
  left: 50%;
  bottom: 24rpx;
}

.goods {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 20rpx 20rpx;
}

.goods .navigator {
  width: 310rpx;
  padding: 20rpx;
  margin-top: 20rpx;
  border-radius: 10rpx;
  background-color: #fff;
}

.goods .thumb {
  width: 305rpx;
  height: 305rpx;
}

.goods .name {
  height: 88rpx;
  font-size: 26rpx;
}

.goods .price {
  line-height: 1;
  color: #cf4444;
  font-size: 30rpx;
}

.goods .symbol {
  font-size: 70%;
}

.goods .decimal {
  font-size: 70%;
}

.loading-text {
  text-align: center;
  font-size: 28rpx;
  color: #666;
  padding: 20rpx 0 50rpx;
}
</style>